#include<bits/stdc++.h>
using namespace std;

const string TT_INT = "INT";
const string TT_FLOAT = "FLOAT";
const string TT_PLUS = "PLUS";
const string TT_MINUS = "MINUS";
const string TT_MUL = "MUL";
const string TT_DIV = "DIV";
const string TT_LPAREN = "LPAREN";
const string TT_RPAREN = "RPAREN";

class Token
{
public:
    // Token类型与Token值
    string type;
    string value;
    Token(const string & type,const string & value);
};

